Lesley.) 266 [Dee. 21, 1877. 
The percentage of Carbonaceous matter in the first set ranges as follows : 
.094 .012 472 .166 .128 
.090 .250 152 PHO .098 
124 .128 .050 .208 .138 
.076 .040 .040 .020 .036 
.010 .016 .160 .060 .130 
.030 .590 .123 200 .018 
.268 .082 .100 .266 .208 
.086 054 .032 .060 .288 
.trace 174 .trace .126 .064 
104 .050 
the highest being .472 and .590.—In the second set the amount of 
carbonaceous matter rises to .212 (45th bed) .220 (6th 5) .800 (6th a) .450 
(28th) .540 (24th). 
All attempts to generalize the results must be deferred until the series of 
analyses shall be completed. 
Nore.—January 30, 1878. The following additional analyses have been 
received from Mr. Hartshorne. Bed 6 was subdivided into an upper and 
a lower portion, although no bed plate subdivision 7m sitw could be detected ; 
solid limestone was seen graduating downwards into laminated limestone, 
almost a slate. The excess of insoluble materials in 65. over 6a. shows the 
cause of the structure : 
6a. 3.6 4.0 89.9 92.0 5.7 4.1 
6D. 3.2 4.1 67.2 66.5 26.6 25.3 
AT 32.4 31:7 60.4 62.0 5.3 5.1 
48 3.2 ea) 92.9 95.7 3.0 Wey 
49 31.9 23.7 61.4 68.9 5.3 7.2 
50 10.0 7.0 84.1 88.7 4.7 3.4 
51 1.3 1.2 98.2 Oieo 1.2 0.7 
52 | 10.8 13.4 79.8 79.5 8.6 6.9 
53 24.2 23.2 66.9 66.1 7.4 ONT, 
54 2.4 2.3 91.6 91.0 5.9 6.8 
